CN1111210C - 彩色显像管用障栅原料及其制造方法和障栅及显像管 - Google Patents
彩色显像管用障栅原料及其制造方法和障栅及显像管 Download PDFInfo
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- 150000004767 nitrides Chemical class 0.000 description 3
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Abstract
本发明目的在于提供具有优异屈服强度和高温蠕变强度,同时与现有材料相比具有优异磁性的彩色显像管用障栅材料,其制造方法,障栅及其构成的显像管。为此,本发明将含有9-30重量%的Ni或9-30重量%的Ni和0.1-5重量%的Co的低碳钢板冷轧后,以400-500℃进行退火;或者冷轧后,以500-800℃进行中间退火,随后施以二次冷轧后,再进行退火。
Description
本发明涉及彩色显像管用障栅材料,其制造方法,障栅和由其构成的显像管。更具体地说涉及具有优异抗拉强度和高温蠕变强度,同时具有优异磁性的彩色显像管用障栅材料,其制造方法,障栅与由其构成的彩色显像管。
在制造彩色显像管中使用的障栅时,由于是在很大张力负荷的状态下焊接在框体上,因此彩色显像管用障栅材料至少必须具有60kgf/mm2的抗拉强度。为此作为现在使用的彩色显像管用障栅材料,使用施以强加工而加工强化的低碳钢板。
此外,为了焊接于框体后施以黑化热处理,为了不使黑化后构成障栅的各个带松驰并可保持张力负荷的状态,热处理是在钢的再结晶温度以下的455℃进行15分钟的短时间。但是,在该黑化热处理条件下不能避免恢复现象,因恢复使带产生延伸而导致带扭曲断裂。因此,作为彩色显像管用障栅用材料必须具有60kgf/mm2以上的抗拉强度,在455℃×15分钟的黑化热处理时不产生延伸,在30kgf/mm2负荷的拉伸应力时延伸需具有0.4%以下的蠕变强度。
彩色显像管由电子枪及电子束转换成影像的萤光屏构成,为了防止电子束因地磁而偏向,因此显像管内部以磁性遮蔽材料进行覆盖。障栅必须具有作为磁遮蔽材料的作用,作为磁性具有大的磁通密度(Br),小的矫顽力(Hc)。即可获得大的磁通密度与矫顽力之比(Br/Hc)大的材料。但是,为获得上述高抗拉强度而施以强加工,且黑化热处理于再结晶温度以下进行的低碳钢板,其磁通密度较小为8千高斯(kG)以下,且矫顽力较大为约5奥斯特(Oe)。因此,本发明材料使用Br(kG)/Hc(Oe)超过1.7的材料为佳。
以往,提高低碳钢板的拉伸屈服强度的方法有用C或N等的固溶强化法,但是钢中的C和N的量增多会增加碳化物或氮化物,会妨碍磁畴的移动,使磁性恶化。另外,提高蠕变强度的方法有钢中析出碳化物等的方法,但是这些析出物几乎粒径皆是较大的微米级,它会妨碍磁畴的移动,使磁性大大恶化,因此上述方法作为现有彩色显像管用障栅材料的制造方法并不适用。
本发明的目的在于提供具有优异的抗拉强度和高温蠕变强度的同时,比现有材料磁性优异的彩色显像管用障栅材料,其制造方法,障栅与由其构成的显像管。
本发明涉及含有9-30重量%的Ni、0.1-5重量%的Co、其余为Fe及不可避免的杂质的低碳钢板所成的彩色显像管用障栅材料,这种材料Br/Hc大于1.7。
本发明还涉及将含有9-30重量%的Ni、0.1-5重量%的Co、其余为Fe及不可避免的杂质的低碳钢板经冷轧之后,以400-500℃的温度退火为特征的上述彩色显像管用障栅材料的制造方法。
本发明还涉及将含有上述组成的低碳钢板经冷轧之后,以500-800℃的温度中间退火,随后施以二次冷轧后,以400-500℃的温度退火为特征的彩色显像管用障栅材料的制造方法。
本发明另外涉及由上述彩色显像管用障栅材料所构成的彩色显橡管用障栅。
在本发明另外涉及由上述的彩色显像管用障栅所构成的彩色显橡管。
现已清楚了解到,在本发明中,添加Ni,或Ni与Co,具有α'(马氏体)单相,或者α'相与Υ(奥氏体)相的2相所构成组织的Ni-Fe系合金,或者以60%以上的压下率冷轧Ni-Co-Fe系合金的热轧板,利用加工诱变形成α'单相后,以400-500℃的温度退火,可具有90kgf/mm2以上的抗拉强度,同时获得优异的磁性。
以下,详细说明本发明。
作为本发明彩色显像管用障栅材料使用的低碳钢板使用真空脱气法进行脱碳和脱氮处理,减少钢中碳化物和氮化物,以热轧和退火步骤促进结晶粒的成长。而且,由于钢中细小分散的碳化物和氮化物会妨碍磁畴的移动使磁性恶化,因此预先限定钢中含的元素,而尽量减少其含量是必要的。首先说明用于本发明彩色显像管用障栅材料的钢中添加的元素及其添加量的限定。
有关C,如冷轧后的钢板中C量多,碳化物增加,阻碍磁畴的移动,并防碍晶粒的生长,引起磁性恶化。为此将C添加量的上限限定在0.01重量%。下限小于以真空脱气处理实际可能降低的限度为佳。
关于Mn,Mn与钢中的S结合,以MnS固定钢中含的S,为防止热脆必需添加,但是为提高磁性则添加量越少者为佳,设定0.5重量%以下的添加量。
Si会使黑化膜的粘合性恶化,因此添加量为0.3重量%以下。
从晶粒生长方面而言S及N越少越好,添加量为0.01重量%以下为佳。
关于Ni,为使热轧后的钢组织限于强磁性且高强度的α'(马氏体)单相而添加9重量%以上。如增加添加量,会降低马氏体产生的开始温度(Ms点),如超过20重量%,在常温的金属组织会变成(α'+奥氏体(Υ))的2相合金。该Υ相为非磁性体,因此,如组织中存在Υ相,会使磁特恶化。但是,Ni添加量超过20重量%,直到30重量%,用60%以上的压下率冷轧使Υ相因加工诱变而变化为α′相。如Ni添加量超过30%,Υ相稳定,即使施以冷轧也不会产生加工诱变,不能获得单相的α'相,因此Ni添加量的上限为20重量%。
Co为几乎不改变Ms点的元素,利用在400-500℃的温度范围的热处理可容易形成规则晶格,可有效地提高遮蔽屏材料的抗拉强度,因此与Ni同时添加。添加少于1重量%不能获得效果,如添加超过5重量%,可增加矫顽力并降低Br(kG)/Hc(Hc),作为磁遮蔽材料较差,因此添加量为1-5重量%。
然后,说明作为本发明彩色显像管的障栅用材料的薄钢板的制造方法。
将利用真空熔化,或真空脱气法熔炼的含有上述化学成分的低碳钢热轧后,酸洗除去热轧过程中产生的氧化皮。随后以60%以上的压下率冷轧。形成0.035-0.2mm板厚后,以400-500℃退火。如加热至350℃以上,钢中产生Ni-Fe或Ni-Fe-Co的规则晶格,会增加Br,减少Hc,其结果使Br/Hc的值增加,在450℃附近获得最大值。如大于500℃,α'相转变为非磁性的Υ相,会使Br/Hc的值急剧地减小,使磁性降低。因此退火温度最好在400-500℃的范围内。
另外,作为其他形式,可对上述低碳钢热轧和酸洗,施以压下率60%以上的冷轧形成0.1-0.6mm的板厚,随之以500-800℃的温度中间退火调整粒径之后,施以二次冷轧形成0.035-0.2mm的最终板厚,随后还可以400-500℃退火。在中间退火温度小于500℃的场合,其软化不足,如大于800℃,二次冷轧后施以上述退火不能获得预期的屈服强度。
(实施例)
以下用实施例更详细地说明本发明。
(实施例1)
将表1所示的含有Ni或含有Ni与Co的8类低碳钢(A-H)真空脱气熔炼成的板坯进行热轧,形成2.5mm的热轧板。将这些热轧板用硫酸酸洗后施以冷轧,形成板厚0.1mm的冷轧板。随后,以表1所示的温度退火。将上述获得的试验材料利用简易型爱普斯坦磁测定装置,施于10奥氏特的磁场,测定磁通密度与矫顽力,求得Br(kG)/Hc(Oe),另外用万能拉力机测定抗拉强度,将结果示于表1。
(实施例2)
将含有实施例1所示相同的Ni或N1与Co的8类低碳钢(A-H)以实施例1所示相同的条件真空脱气熔炼成的板坯进行热轧,形成2.5mm的热轧板。将这些热轧板用硫酸酸洗后冷轧,形成板厚0.3mm的冷轧板。随后,以750℃的温度施以40分钟的中间退火,二次冷轧形成板厚0.1mm。其后以表2所示的温度退火。将这样获得的试验材料与实施例1同样进行磁通密度与矫顽力的测定,求得Br(kG)/Hc(Oe),并与实施例1同样进行抗拉强度的测定,其结果示于表2。
表1
钢类别 | 试样No | 添加元素(W%) | 回火温度(℃) | 抗拉强度(kg/mm2) | Br/Hc(kG/Oe) | 区别 |
A | A1A2A3A4A5 | Ni(9) | 400450500 | 11010095 | 2.42.62.8 | 实施例实施例实施例 |
350550 | 12084 | 1.51.2 | 比较例比较例 | |||
B | B1B2B3B4B5 | Ni(15) | 400450500 | 11210497 | 2.42.62.8 | 实施例实施例实施例 |
350550 | 12389 | 1.61.2 | 比较例比较例 | |||
C | C1C2C3C4C5 | Ni(20) | 400450500 | 115112101 | 2.63.22.3 | 实施例实施例实施例 |
350550 | 12590 | 1.80.1 | 比较例比较例 | |||
D | D1D2D3D4D5 | Ni(25) | 400450500 | 11010090 | 2.43.91.8 | 实施例实施例实施例 |
350550 | 11590 | 1.50.1 | 比较例比较例 | |||
E | E1E2E3E4E5 | Ni(30) | 400450500 | 1009085 | 2.83.91.6 | 实施例实施例实施例 |
350550 | 11595 | 1.41.0 | 比较例比较例 | |||
F | F1F2F3F4F5 | Ni(20)Co(0.1) | 400450500 | 117114103 | 2.43.12.1 | 实施例实施例实施例 |
350550 | 12792 | 1.60.1 | 比较例比较例 | |||
G | G1G2G3G4G5 | Ni(20)Co(2) | 400450500 | 120116103 | 2.33.91.6 | 实施例实施例实施例 |
350550 | 12898 | 1.50.3 | 比较例比较例 | |||
H | H1H2H3H4H5 | Ni(20)Co(5) | 400450500 | 125120115 | 2.02.22.8 | 实施例实施例实施例 |
350550 | 130105 | 1.10.5 | 比较例比较例 |
表2
钢类别 | 试样No | 添加元素(W%) | 回火温度(℃) | 抗拉强度(kg/mm2) | Br/Hc(kG/Oe) | 区别 |
A | A1A2A3A4A5 | Ni(9) | 400450500 | 1059590 | 2.52.73.0 | 实施例 |
350550 | 11080 | 1.51.4 | 比较例 | |||
B | B1B2B3B4B5 | Ni(15) | 400450500 | 10910092 | 2.62.83.1 | 实施例 |
350550 | 11888 | 1.51.2 | 比较例 | |||
C | C1C2C3C4C5 | Ni(20) | 400450500 | 113107103 | 2.53.42.8 | 实施例 |
350550 | 11591 | 1.80.1 | 比较例 | |||
D | D1D2D3D4D5 | Ni(25) | 400450500 | 11010090 | 2.44.01.8 | 实施例 |
350550 | 11588 | 1.50.1 | 比较例 | |||
E | E1E2E3E4E5 | Ni(30) | 400450500 | 989382 | 2.83.91.5 | 实施例 |
350550 | 10280 | 1.41.0 | 比较例 | |||
F | F1F2F3F4F5 | Ni(20)Co(0.1) | 400450500 | 115109105 | 2.43.22.6 | 实施例 |
350550 | 11798 | 1.60.1 | 比较例 | |||
G | G1G2G3G4G5 | Ni(20)Co(2) | 400450500 | 117112106 | 2.42.92.9 | 实施例 |
350550 | 12098 | 1.60.3 | 比较例 | |||
H | H1H2H3H4H5 | Ni(20)Co(5) | 400450500 | 120116109 | 2.12.33.0 | 实施例 |
350550 | 125105 | 1.30.4 | 比较例 |
本发明障栅用材料是含有9-30重量%的Ni的低碳钢板;本发明障栅用材料还由含有9-30重量%的Ni和0.1-5重量%的Co的低碳钢板所构成,因此具有优异的磁性、强度。
本发明制造方法是将含有9-30重量%的Ni的低碳钢板冷轧后,以400-500℃的温度退火;本发明制造方法还是将含有9-30重量%的Ni和0.1-5重量%的Co的低碳钢板冷轧后,以400-500℃的温度退火;本发明制造方法还是将含有9-30重量%的Ni的低碳钢板冷轧后,以500-800℃的温度中间退火,随后施以二次冷轧后,以400-500℃的温度退火;本发明制造方法还是将含有9-30重量%的Ni和0.1-5重量%的Co的低碳钢板冷轧后,以500-800℃的温度中间退火,随后施以二次冷轧后,以400-500℃的温度退火。通过上述的制造方法可制造具有90kgf/mm2以上的优异抗拉强度的,且Br(kG)/Hc(Oe)大于1.7的优异磁性的彩色显像管用障栅材料。
而且,本发明的障栅或显像管施以焊接框体后的黑化热处理,构成障栅的各个带不松驰。
Claims (5)
1.一种彩色显像管用障栅材料,其特征为:其由含有Ni 9-30重量%的Ni、0.1-5重量%的Co、其余为Fe及不可避免的杂质的低碳钢板所构成,且磁通密度与矫顽力之比大于1.7。
2.一种权利要求1所述的彩色显像管用障栅材料的制造方法,其特征为:将含有9-30重量%的Ni、0.1-5重量%的Co、其余为Fe及不可避免的杂质的低碳钢板冷轧后,以400-500℃的温度退火。
3.根据权利要求2所述的彩色显像管用障栅用材料的制造方法,其特征为:将所述低碳钢板冷轧后,以500-800℃的温度中间退火,随后施以二次冷轧后,以400-500℃的温度退火。
4.一种彩色显像管用障栅,其特征为:其由权利要求1所述的彩色显像管用障栅材料所构成。
5.一种彩色显像管,其特征为:安装了权利要求4所述的彩色显像管用障栅。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP1998/001198 WO1999047719A1 (fr) | 1998-03-19 | 1998-03-19 | Materiau pour grille d'ouverture pour tube image couleur, son procede de production, grille d'ouverture et tube image |
Publications (2)
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CN1294635A CN1294635A (zh) | 2001-05-09 |
CN1111210C true CN1111210C (zh) | 2003-06-11 |
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CN98813907A Expired - Fee Related CN1111210C (zh) | 1998-03-19 | 1998-03-19 | 彩色显像管用障栅原料及其制造方法和障栅及显像管 |
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US (1) | US6777863B1 (zh) |
EP (1) | EP1065291B1 (zh) |
JP (1) | JP3477489B2 (zh) |
KR (1) | KR100511181B1 (zh) |
CN (1) | CN1111210C (zh) |
AU (1) | AU6420298A (zh) |
DE (1) | DE69833042D1 (zh) |
WO (1) | WO1999047719A1 (zh) |
Citations (2)
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JPH0673452A (ja) * | 1992-02-28 | 1994-03-15 | Nkk Corp | 耐銹性に優れたFe−Ni合金薄板およびFe−Ni−Co合金薄板の製造方法 |
JPH06184701A (ja) * | 1992-12-21 | 1994-07-05 | Nippon Metal Ind Co Ltd | シャドーマスク用Fe−Ni合金板 |
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DE2217280A1 (de) * | 1972-04-11 | 1973-10-31 | Metallgesellschaft Ag | Lochblende in farbbildroehren |
JPS60128253A (ja) * | 1983-12-15 | 1985-07-09 | Nippon Mining Co Ltd | エツチング時のスジむらの発生を抑制したシヤドウマスク用鉄−ニツケル基合金の製造方法 |
JPS6164853A (ja) * | 1984-09-06 | 1986-04-03 | Toshiba Corp | 管内部品用素材とその製造方法 |
JPH07233443A (ja) | 1994-02-21 | 1995-09-05 | Nkk Corp | 黒化処理性に優れたカラー受像管用Fe−Ni系および Fe−Ni−Co系合金薄板 |
JP2781336B2 (ja) | 1994-03-29 | 1998-07-30 | 日本冶金工業株式会社 | 黒化処理性に優れたシャドウマスク用Fe−Ni系合金及びその製造方法 |
JP3348565B2 (ja) | 1995-06-07 | 2002-11-20 | 日本鋼管株式会社 | 脱脂性に優れた電子部品用Fe−Ni系合金薄板ならびにFe−Ni−Co系合金薄板の製造方法 |
-
1998
- 1998-03-19 DE DE69833042T patent/DE69833042D1/de not_active Expired - Lifetime
- 1998-03-19 CN CN98813907A patent/CN1111210C/zh not_active Expired - Fee Related
- 1998-03-19 KR KR10-2000-7010337A patent/KR100511181B1/ko not_active IP Right Cessation
- 1998-03-19 US US09/646,349 patent/US6777863B1/en not_active Expired - Fee Related
- 1998-03-19 JP JP2000536900A patent/JP3477489B2/ja not_active Expired - Fee Related
- 1998-03-19 WO PCT/JP1998/001198 patent/WO1999047719A1/ja active Search and Examination
- 1998-03-19 EP EP98909778A patent/EP1065291B1/en not_active Expired - Lifetime
- 1998-03-19 AU AU64202/98A patent/AU6420298A/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0673452A (ja) * | 1992-02-28 | 1994-03-15 | Nkk Corp | 耐銹性に優れたFe−Ni合金薄板およびFe−Ni−Co合金薄板の製造方法 |
JPH06184701A (ja) * | 1992-12-21 | 1994-07-05 | Nippon Metal Ind Co Ltd | シャドーマスク用Fe−Ni合金板 |
Also Published As
Publication number | Publication date |
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US6777863B1 (en) | 2004-08-17 |
DE69833042D1 (de) | 2006-02-02 |
KR100511181B1 (ko) | 2005-08-30 |
JP3477489B2 (ja) | 2003-12-10 |
EP1065291B1 (en) | 2005-12-28 |
WO1999047719A8 (fr) | 2001-03-01 |
CN1294635A (zh) | 2001-05-09 |
KR20010042006A (ko) | 2001-05-25 |
EP1065291A4 (en) | 2004-05-12 |
EP1065291A1 (en) | 2001-01-03 |
AU6420298A (en) | 1999-10-11 |
WO1999047719A1 (fr) | 1999-09-23 |
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